The Iron Man star married Ghent, a commercial production employee, in a secret ceremony in January 2010.
Ghent filed for divorce on February 2, 2011, and was later awarded a restraining order against Howard after claims that he physically assaulted her during their marriage.
Howard was ordered by a judge to pay Ghent $50,000 in temporary support while divorce proceedings continued, according to TMZ.
The former couple have now reportedly finalised a deal that will divide assets evenly between them, although specific details on the settlement have not been released.
Documents were signed on August 16, and the restraining order against Howard will be lifted next week.